Re: Bierstadt patented in cover book stereo viewer
Bill Burns
Here's an 1880 pamphlet from Harroun & Bierstadt advertising the Artotype process:
"Artotypes are photographs in printing-ink" https://digital.clarkart.edu/digital/collection/p1325coll1/id/2102 Artotype appears to have been similar to the 1855 collotype printing process: https://en.wikipedia.org/wiki/Collotype I have not yet found an 1876 patent for Bierstadt. -- Bill On 18-Sep-20 4:53 PM, robert mcafee via groups.io wrote: David, -- Bill
|
|